RA 8150 EX SIGNAL STORES G.W.R. SMALL SHEEP DOME BELL TOP. repairs This is the best example

This is the best example of the classic Great Northern Railway single needle  block telegraph instrument

felt stop pads and G

The whistle measures 13" long with a diameter of  1 1/2" on the whistle tube

This amazing illuminate signal box diagram from Thorpes Bridge Junction box has everything

RA 8150 EX SIGNAL STORES G.W.R. SMALL SHEEP DOME BELL TOP. repairs This is the best exampleAn ex Reading Signal Dept. stores small G. W. R. sheep dome bell, this bell has been used before and the stores would have kept different shapes and sizes and block bell required refurbishment. Overall measurements are 5" across base and 4 1 8" high. Excellent polished Nickle plate.